| Effect of copper addition on the thermal contraction of indium melt clusters |
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| 作者姓名： | CHENG Sujuan WANG Zhonghua QINXubo and BAN Xiufang
Key Laboratory of Liquid Structure and Heredity of Materials Ministry of Education Shandong University Jinan China
Mechanical Engineering |
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| 作者单位： | CHENG Sujuan WANG Zhonghua QINXubo and B1AN Xiufang
1) Key Laboratory of Liquid Structure and Heredity of Materials，Ministry of Education，Shandong University，Jinan 250061，China
2) Mechanical Engineering Department，Shandong University of Technology，Zibo 255000，China
3) Shandong Dacheng Pesticide Co. Ltd.，Zibo 255000，China |
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| 基金项目： | This work was financially supported by the National Natural Science Foundation of China (No. 50231040)，the Natural Science Foundation of Shandong Province, China (No. Z2001F02) |
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| 摘 要： | The structure of In-1%Cu and In-5%Cu (mass fraction) alloy melts were studied at different temperatures above liquidus by using a high-temperature X-ray diffractometer and were compared with that of pure In melt. Experimental results show that with the addition of 1% Cu or 5% Cu, the thermal contraction phenomenon of atom clusters occurs in melts with the temperature increasing like pure In melt. With the addition of 1% Cu, the thermal contraction of atom clusters increases and the contraction is not homogeneous in the whole measurement temperature range. The sudden change and noticeable contraction can be found in the range of 280-390℃. The temperature range of the sudden change is lower than that of pure In melt. With the addition of 5% Cu, the thermal contraction of atom clusters decreases and the contraction is not consistent in the whole measurement temperature range. The anomalous change can be measured at about 600 ℃. At the same superheating temperature, the nearest interatomic distance r1 of
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Effect of copper addition on the thermal contraction of indium melt clusters |
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| CHENG Sujuan WANG Zhonghua QINXubo and BAN Xiufang
Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan ,China
Mechanical Engineering.Effect of copper addition on the thermal contraction of indium melt clusters[J].Rare Metals,2003,22(3). |
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| Authors: | Cheng Sujuan Wang Zhonghua QIN Xubo BIAN Xiufang |
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| Abstract: | The structure of In-1%Cu and In-5%Cu (mass fraction) alloy melts were studied at different temperatures above liquidus by using a high-temperature X-ray diffractometer and were compared with that of pure In melt. Experimental results show that with the addition of 1% Cu or 5% Cu, the thermal contraction phenomenon of atom clusters occurs in melts with the temperature increasing like pure In melt. With the addition of 1% Cu, the thermal contraction of atom clusters increases and the contraction is not homogeneous in the whole measurement temperature range. The sudden change and noticeable contraction can be found in the range of 280-390℃. The temperature range of the sudden change is lower than that of pure In melt. With the addition of 5% Cu, the thermal contraction of atom clusters decreases and the contraction is not consistent in the whole measurement temperature range. The anomalous change can be measured at about 600℃. At the same superheating temperature, the nearest interatomic distance r1 of the melts containing copper is smaller than that of pure In melt, implying that the cluster structure of melts containing copper is more compact. |
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| Keywords: | liquid structure thermal contraction X-ray dirrraction cluster copper addition In melt |
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